Answer :
Final answer:
At least two orthographic views are necessary to construct an oblique projection.
Explanation:
Orthographic views, also known as orthographic projections, are 2D representations of a 3D object using multiple 2D views. At least two orthographic views are necessary to construct an oblique projection. In orthographic projection, an object is represented using multiple views or projections from different directions. The minimum number of views required is two, typically the front view and one other view, such as the top view or the side view. In engineering, architecture, and design, orthographic views are essential for accurately communicating the shape, size, and details of objects.
